manual service mmed6000dp-m7

Service Manual MMED6000DP-M7

Version: VS1.0M7

Issue date: 22/March 2010

Copyright Beijing Choice Electronic Technology Co., Ltd. (hereinafter called Beijing Choice) owns all rights to this unpublished work and intends to maintain this work as confidential. Beijing Choice may also seek to maintain this work as an unpublished copyright. This publication is to be used solely for the purpose of reference, operation, maintenance, or repair of Choice equipment. No part of this can be disseminated for other purposes. In the event of inadvertent or deliberate publication, Beijing Choice intends to enforce its right to this work under copyright laws as a published work. Those having access to this work may not copy, use, or disclose the information in this work unless expressly authorized by Beijing Choice to do so. All information contained in this publication is believed to be correct. Choice shall not be liable for errors contained herein nor for incidental or consequential damages in connection with the furnishing, performance, or use of this material. This publication may refer to information and protected by copyrights or patents and does not convey any license under the patent rights of Beijing Choice, nor the rights of others. Beijing Choice does not assume any liability arising out of any infringements of patents or other rights of third parties. Content of the manual is subject to changes without prior notice.

©BEIJING CHOICE ELECTRONIC TECHNOLOGY CO., LTD.

ALL RIGHTS RESERVED

Precautions:

Maintenance of the monitor must be performed by technical personnel who have been trained on professional technology and have mastered the maintenance knowledge.

To prevent electrical hazard, do not handle the monitor in high temperature, high voltage, gas fumigation, or soaking in liquid, cut of the main power before cleaning or sterilizing the monitor.

If the monitor is wetted accidentally during the operation or maintenance, please stop it and clean and dry the affected parts.

While replacing the fuse, please replace with the fuse of the same specification and the same rated current.

Before practical operation of the system, check all the cable connections for damage, and replace the damaged cable and joints immediately. Before using the system, the operation must check the system for correction working situation and operation condition.

If the monitor is not stored and used according to the stipulated environment conditions, performance and precision of the system may be affected.

If the icon of alarm bell or sound switch is marked with “X”, there will be no sound alarming under any circumstance.

Do not rely on the sound alarm system of the patient monitoring only. During the monitoring, when the alarm volume is turned down or closed, the medical care personnel may not be notified when the patient is dangerous. Please remember, the most reliable monitoring method is to combine close personnel monitoring with correct operation of the monitoring equipment.

After connecting the monitor to the central monitoring system, please check the alarm system for normal function.

When the monitor is connected with external equipments, the equipment shall accord with the electric leakage indicator of IEC 60601-1 standard to prevent possible dangerous electric leakage.

When the monitor is used continuously for a long time, please connect it to network power supply. Please connect the monitor to network power supply as soon as the power down alarm rings when using battery, otherwise, the monitor will be closed automatically to cause monitoring interruption.

Wireless LAN equipment contains built-in RF radiator which may interrupt other medical equipments including patient implanting equipments. Before installation and connecting new medical equipment to the coverage of wireless LAN, please perform electromagnetic compatibility test according to the instructions of Installation and Maintenance Manual for Wireless LAN System.

The electrodes of lead shall not connect with other conductors and ground.

When the monitor is used with defibrillator, use special defibrillating leads to protect discharging efficiency of the cardiac defibrillator, and during the defibrillating, do not touch the patient, leads, instrument, and the table of placing the instrument.

Please refer to the User Manual for precautions of other operations.

Contents CHAPTER 1. Introduction...................................................................................................1

1.1 General ..................................................................................................................................................... 1 1.2 Brief Description .................................................................................................................................... 1 1.3 Appearance introduction ..................................................................................................................... 1

CHAPTER 2. Function principle ......................................................................................4

2.1 Principle of hardware ............................................................................................................................ 4 2.1.1 Power supply Module .................................................................................................................. 4 2.1.2 Main control board ....................................................................................................................... 5 2.1.3 Main function board (CSN608 board)...................................................................................... 5 2.1.4 Keyboard ........................................................................................................................................ 7

2.2 Principle of software ............................................................................................................................. 8 2.2.1 Real-time operating system....................................................................................................... 8

CHAPTER 3. Verification of monitoring parameter ..........................................................10

3.1 System inspection ............................................................................................................................... 10 3.1.1 Appearance and assembly inspection of the whole machine ........................................ 10 3.1.2 Start-up inspection..................................................................................................................... 10 3.1.3 Normal operation inspection................................................................................................... 10 3.1.4 Record ........................................................................................................................................... 10 3.1.5 Net working function ................................................................................................................. 10 3.1.6 Clock inspection ......................................................................................................................... 10

3.2 Engineer menu...................................................................................................................................... 11 3.3 Parameter verification ........................................................................................................................ 11

3.3.1 Inspection of ECG and RESP parameter .............................................................................. 11 3.3.2 Inspection of NIBP parameters ............................................................................................... 11 3.3.3 SpO2 parameter inspection ...................................................................................................... 13 3.3.4 TEMP parameter inspection..................................................................................................... 13

CHAPTER 4. Service.................................................................................................................15

4.1 Disassembly diagrams ....................................................................................................................... 15 4.2 Fault clearance guidance................................................................................................................... 15

4.2.1 Fault of whole machine............................................................................................................. 15 4.2.2 Display fault ................................................................................................................................. 16 4.2.3 Operation, record, and net working faults ........................................................................... 16 4.2.4 Power panel fault ........................................................................................................................ 16 4.2.5 Monitoring parameter fault ...................................................................................................... 16

CHAPTER 5. Monitor Installation ..........................................................................................18

5.1 Core connection of the monitor ....................................................................................................... 18 5.2 Casing inspection of the monitor .................................................................................................... 19 5.3 Electrifying inspection of the monitor............................................................................................ 19 5.4 Installation of printer ........................................................................................................................... 19

CHAPTER 6. Basic Operation ................................................................................................20

6.1 Key pressing ......................................................................................................................................... 20 6.2 Screen display area ............................................................................................................................. 20

CHAPTER 7. Cleaning and Maintenance ............................................................................21

7.1 Cleaning ................................................................................................................................................. 21 7.1.1 Cleaning ........................................................................................................................................ 21 7.1.2 Sterilizing...................................................................................................................................... 21 7.1.3 Disinfecting .................................................................................................................................. 21

7.2 Maintenance .......................................................................................................................................... 21

CHAPTER 8. Net working ........................................................................................................22

8.1 Networking performance ................................................................................................................... 22 8.2 Use ........................................................................................................................................................... 22

Appendix 1 Keys brief Description.......................................................................................22

Appendix 2 Alarm instructions ..............................................................................................23

Service Manual VS1.0M7

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CHAPTER 1. Introduction

1.1 General

This service manual is used for maintaining the monitor by technicians authorized by our company. This manual introduces the repairing and maintenance of MMED6000DP-M7 monitor.

1.2 Brief Description

The vital signals which the MMED6000DP-M7 monitors include: ECG, SpO2, NIBP, RESP, TEMP etc. MMED6000DP-M7 multi-parameter monitor adopts fine resolution TFT display displaying the measured data, waveform and parameters. This monitor can display 7 leads waveforms and all monitoring parameters. Moreover, the monitor can be connected to the network and communicate real-time data with the central monitoring system.

1.3 Appearance introduction

Front panel

Fig. 1-1

(1) Indicator light: Indicating the power supplying state of the monitor

Green: power supplying

(2) Power switch: Press the button for about 3/4 seconds to power on/off.

(3) Indicator light: Indicating battery charging status

Orange and flash: the battery is in the process of quick charging.

Orange: the battery is slowly being charged or the charge is finished.

(4) FREEZE

Pressing the button will freeze the waveform of ECG. Pressing “FREEZE” button again will restore the normal monitor status.

(5) SILENCE ALARM function button. When pressing the button, the icon in menu status is shown as ， which indicates all the audible alarms have been shut off. Once a new alarm event occurs, the audible alarm function will be activated automatically. Or the audible alarm will be restarted automatically if the alarm event still exists after 3 minutes.You can also restore the audible alarm by pressing the button again. The icon shown as which indicates the audible alarm function is restored.

NOTE： When “ ” mark appears, the system can not give the audible alarm prompt. Therefore, the operator should use this function carefully.

(6) NIBP Start/Cancel NIBP measuring button. Pressing the button will inflate the cuff to start a new NIBP measurement. During the measurement, press this button to cancel the measurement and deflate the cuff, including the “CYCLE” and “STAT (NOT STOP)” measuring mode.

(7) PRINT PRINT button. Pressing this button will motivate the recorder to output the results if the monitor is equipped with them.

(8) MENU Pressing the button will exit the submenu and refresh the screen. If the CF card is inserted, you can store the changed parameters setting as configuration files in a CF card only by pressing the REFRESH button. Any setting is not refreshed in a CF card before you press the REFRESH button.


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(9) Rotary Knob

The operator uses the rotary knob to select the menu item and modify the setup. It can be rotated clockwise or counter-clockwise and pressed like other buttons. The operator uses the knob to realize the operations.

The method of using the knob to execute the operation:

Rotary knob is just like the cursor of computer. When operator rotates the knob on the icon where the operation is wanted, the icon will be automatically highlighted. Then press the knob, operator will open the setup menu of the corresponding parameter so as to set up the menu.

(10) ALARM Indicator

If there is physiological alarm, it demonstrates that some parameters measurement is beyond alarm limitation, in the meantime, the indicator begins flashing. There are three alarm-levels in all for selection:

High level: when alarm occurs, the color of the indicator becomes red and starts flashing once every one second.

Mid level: when alarm occurs, the color of the indicator becomes orange and starts flashing once every one second.

Low level: when alarm occurs, the color of the indicator becomes green and starts flashing once every one second.

Side Panel

Fig. 1-2

(1). NIBP socket：connect NIBP cuff with extension tube.

(2). Temperature socket1: connecting the TEMP probe.

(3). Temperature socket2: connecting the TEMP probe.

(4). ECG socket：Connect ECG 5-lead wire with 6 PIN connector.

(5). SpO2 socket：Connect the SpO2 sensor with extension cable.

(6). Battery cover.

CF card and Recorder

Fig. 1-3

(1) CF card interface: CF card is a memory. Plug a CF card in this interface. If the CF card has been inserted before power on, the configuration files (including all the set parameters) and the measurement data stored in the CF card will be read after power on. During the operation, the measured data will be automatically stored in the CF card. You can store the changed parameters setting as configuration files in the CF card only by pressing the REFRESH button.

NOTE: DO NOT plug and insert the CF card when the monitor is working! Any setting is not refreshed in a CF card before you press the REFRESH button.

Fig. 2-2


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(2) A thermal array recorder with standard 50mm (+1/-1) wide printout paper is used for the portable patient monitor. About the detailed information, please refer to Section 6.3 Print Setup.

NOTE: The thermal array recorder should be installed by the adequate technician.

Rear Panel

Fig. 1-4

(1) Power socket AC Power supply: 100-240 (VAC), 47-63(Hz); Fuse: standard –T 2.0A 250(VAC)

(2) DC power supply (reserved)

(3) Equivalent electric ground access for connecting with the hospital’s grounding system.

(4) NET access point: connecting with the central monitoring system through the standard RJ-45.


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CHAPTER 2. Function principle

2.1 Principle of hardware This section introduces the functions and operating principle of every function board of the MMED6000DP-M7 multi-parameter monitor.

2.1.1 Power supply Module Power supply module of MMED6000DP-M7 patient monitor composed of two parts: AC-DC Power Supply Module and CSN 512 power supply board. The principle of power supply module is shown in the fig.2-1：

Figure 2-1 Block diagram

（1）. Isolated Switching Power Supply Module The AC-DC Power Supply Module supplied power supply board CSN512. Input voltage: AC90V~260V，Output voltage: DC14.85~15.15V，Output Continuous Current : 2.8A.

（2）.CSN512 power supply board AC-DC Power Supply Module supplies CSN512 power supply board and charges the battery though the CSN512. The board CSN512 composed of switching circuit, fan control, audio control and charging circuit. And the Temperature sensor is positioned on the CSN512 board. The voltages of the three DC currents which are output from the switching circuit are 12V, 6V and 5V. Those currents supply fan controlling circuit and printer, audio controlling circuit and CSN608 board. The temperature sensor DS1820 is positioned on the CSN512 board and its signal is acquired by keyboard. The method of cooling for the monitor is fanning.

（3）. Key point of the power supply board The voltages of key points of the power supply board are discripted as bellow:

Key point Reference Voltage Pin 3，4 of P2 DC15V±5%

Pin 3，4 of P9 DC6V±5%

Pin 3，4 of P11 DC5V±5%

Pin 2 of P4 Actual voltage of battery

（4）.Dimension of CSN 512:

Figure 2-2

（5）.Interfaces of CSN 512:

Figure 2-3

CSN512 power supply board supplies the following components including: CSN720 mainboard、CSN608 functional board、key board、rechargeable battery、laudspeaker、fun、inverter、printer etc.


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The functions of the components above are descripted as the following table:（Note：The square pin of the interface is the first.）

NO. Function NOTE

P1 Interface to keyboard

P2 Input of the power supply board To the output of the AC-DC Power Supply Module

P3 Interface of fan and loudspeaker control To the key board

P4 Interface of the battery.

P5 Interface of the laudspeaker

P6 Input of audio signal To the mainboard CSN710

P7 Interface of the fan

P8 Interface of the printer’s power supply 1pin: 5V，2pin: ground，3pin: 12V

P9 Power supply interface of CSN608 1&2pin:ground，3-4pin:6V

P10 Power supply interface of inverter（2Pin） Not connect

P11 Power supply interface of CSN720 1&2pin:ground，3-4pin:5V

P12 Interface of the temperature sensor To key board

2.1.2 Main control board

The main board and functional boards and key board communicate with each other via serial port.

The layout of CSN720 is shown as below：

Figure 2-4

The functions of the main board are described as follows: （Note：The square pin of the interface is the first.）

NO. Function Note J3 Interface of LCD To key board

J4 Serial port for functional board CSN608 3-Line TTL serial port

J5 Audio interface To power supply board CSN512

J6 Serial port for key board 3-Line TTL serial port

J7 Serial port for printer 3-Line TTL serial port

J10 Interface to power supply board CSN512 DC 5V

CON2 Signal interface, To CF card reader and networks card adapter

2.1.3 Main function board (CSN608 board) CSN608 main function board is composed of ECG/ RESP/TEMP module, NIBP and SPO2 modules. This section introduces the working principle of these functional modules in detail.

(1). ECG/RESP/TEMP module

ECG/RESP/TEMP module is composed of five parts, including ECG amplification circuit, respiration circuit, temperature circuit, control and data acquisition circuit, isolation power supply and isolation photocoupler circuit. ECG amplification circuit is divided into three parts, including ECG pre-amplification grade, channel I and II of ECG main amplification. Its functional block diagram is shown as figure 2-5.


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Figure 2-5 Functional block diagram of ECG/RESP/TEMP module

ECG pre-amplification grade includes signal buffering circuit and lead-off detection circuit. The cardiac electricity signal from the body will flow to the lead-off detection circuit through the signal buffering circuit to judge whether the lead off or not, and then flow to the main amplification channel of cardiac electricity and be amplified and filtered under the control of the MCU so as to obtain ECG signal. The main amplification channel II of ECG includes pacing pulse detection circuit which is to detect the pacing pulse signal superimposed in the ECG signal. Thoracic Impedance signal from the body is regulated by the preliminary respiration circuit and then transferred the post respiration circuit for being demodulated, amplified, and filtered, so as to obtain the respiration wave signal. The body temperature circuit can amplify and filter the input signal by the body temperature probe and output a voltage signal corresponding to the temperature. This circuit is composed of sampling switch, constant current source and filter. MCU of the control and data acquisition circuit converts the analog signals, including the ECG signal, respiration wave signal and temperature signal, to digital signals. And it can carry out date acquisition, ECG circuit control (including lead switching, gains selection, filtering selection and lead off status reading), body temperature circuit control(selection of probe type and channel), as well as communication with the main system, acquisition the control signal and upload waveform data and status; the isolated power supply and isolated photocoupler circuit convert the +6V power from the main system into ±8V analog +3.3V, and digital +3.3V power supplies by the ECG/RESP/TEMP circuits through the DC/DC convertor, and realize electric isolation. The data of ECG/RESP/TEMP is transmitted through the isolated photocoupler circuit and the serial interface, and then realize isolated transmission of signals.

Besides, the ECG/RESP/TEMP module has three interfaces, among which P200 is the ECG sensor interface used for connecting ECG Lead cable; P201 is the body temperature probe interface; P10 is the serial interface connecting with the main control board and P11 is the input power supply from the power board.

(2) NIBP module

NIBP module is composed of blood pressure circuit, one charging motor, and two deflation valves. The functional block diagram is as shown in figure 2-6.

Figure 2-6 Functional block diagram of blood pressure measuring

Among which, the analog circuit is divided into cuff pressure, pulse wave detection and cuff overpressure protection circuit. The digital circuit is the control component composed of Z80180 and its peripheral devices. The pressure sensor converts the current air pressure into voltage signal which will be amplified by the amplification then the voltage signal is transferred to A/D converter.

Core device of the circuit is Z80180 which communicates with the main control CPU through the serial interface and accomplishes functions such as blood pressure measuring according to the order of CPU and transfers the measured results and working condition to the main control CPU for display. Z80180 controls the motor’s start and switch of the air relief valve through the peripheral circuit and monitors the pressure amplification circuit and motor operation circuit through A/D chip.

The input of the functional board supplies the charging motor and deflation valve, and then generates +5V power through the LDO on the circuit board and acts as working power supply of the whole blood pressure system.


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(3) SPO2 module

SPO2 module includes CPU, photoelectricity driver, signal processing circuit and power supply circuit. The block diagram of SpO2 module is shown in the figure below. CPU of SpO2 module accomplishes internal circuit control, AD sampling and computation, as well as communications with serial interfaces of 608 main control board’s CPU. CPU uses the C8051F005 produced by XinHua Dragon, with a working clock of 11.0592MHz. The single chip C8051F005 contains a 32K FALSH memory, a 2304 bites RAM, 12-bite AD converter and 2-way 12-position D/A converter. The photoelectricity driver, under the control of the single chip, produces driving current for driving the LED inside the SpO2 sensor. The photoelectricity signal produced by the sensor will be amplified by the differential amplification circuit first, and then be amplified again after filtering the direct component. Finally, the AC components are amplified by the biasing amplification circuit (U105A) to obtain sampling signal which will be transferred to the AD input end of U100 for AD switching. The power supply circuit used the 3.3V digital power supply on board 608. The SpO2 board has only one external interface, namely the SpO2 sensor interface (P11), and it communicates with 608 main control board’s CPU through the serial interface. Its working functional block diagram is shown in Figure 2-7.

Figure 2-7

(4) Interfaces and descriptions of CSN608

Positions and dimensions of the interfaces of the 608 function board are shown in the figure below:

Figure 2-8

The figure above shows the design of initial electric input and output of CSN608 module, and the table below describes all the pins and status of the connections. (Note: the square pin of all interface sockets is no. 1):

No. Function Remark

P10 Serial port of functional board pin1:TXD; pin2:RXD; pin3:GND

P11 Interface of power supply Pin1,2: VDD; pin3,4:GND

P200 Interface of ECG cable Connect with the side panel

P201 Interface of TEMP cable Connect with the side panel

P105 Interface of SpO2 cable Connect with the side panel

J1 Connect with deflating valve Connect with the pump valve board

J6 Connect with deflating valve Connect with the pump valve board

J2 Connect with inflating pump Connect with the pump valve board

2.1.4 Keyboard

The keyboard of MMED6000DP-M7 monitor includes: keyboard identification circuit, function control circuit and driving circuit. This section introduces the operating principle of the keyboard in detail.

The keyboard is fixed on the front shell and has six keys, S2, S4, S5, S7 and S8 and the input S1 of the knob coder. The keyboard adopts Atmega48 single chip produced by ATMEL Company as the processing core to accomplish the function of keyboard scanning, charging control, key code data sending and receiving, and indicator driving through related peripheral circuit.

Signals from the key-press and knob are transmitted to the main board after being identified by the single chip through the serial interface. The sound and alarm are controlled by the single chip according to the serial interface data received from the main board. The keyboard sends control signals to the power panel through P6 and P3. P5 is the temperature sensor wire which is connected to power panel P12. P2 is the interface of function indicator, and P4 is the serial interface of keyboard.


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Figure 2-9 Functional block diagram of the key board

Interfaces of the keyboard and their functions are described as below:

No. Function Remark P1 Program download port of the key board Use to upgrade the monitor’s program P2 Interface of double color alarm indicator Connect with front panel P3 Interface of fan and loudspeaker control Connect with power board P4 Serial interface of keyboard Connect with main board P5 Interface of temperature sensor Connect with power board P6 Keyboard control interface Connect with power board P7 Interface of inverter Connect with inverter J1，J2 Interface of LCD display Connect with LCD display

2.2 Principle of software

2.2.1 Real-time operating system This sytem is an embedded real-time single task system supported by real-time operating system, and characteristics of the application procedure operated include:

(1) Real time

(2) Response capability of asynchronous event

(3) Interuption management capability

(4) switching time and time interuption defering shall be definite

2.2.2 General information of the software system

(1). Data flow diagram:

Figure 2-13 Block diagram of data flow


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(2) Task division

①． Data devision task

②． Data processing task

③． Arrhythmia analysis task

④． Interface processing task

⑤． Task of sending control command

⑥． Output task of the recorder

⑦． Network sending task

⑧． Network reception task

⑨． Task of refreshing the new waveform regularly

(3) Task design

①．Data division task: revert the data recieved by the serial interfaces to original real data and put the data to corresponding data region, such as waveform data region, parameter data region, and status data region.

②．Data processing task: accomplish computation of the parameters and alarm for distinguishing, if there is any alarm, the system forms an alarm data region, and in the meantime form a short tendency and long tendency database.

③．Arrhythmia analysis task: perform arrhythmia analysis， store the waveform of arrhythmia and corresponding information.

④．Interface processing task: accomplish human-computer interactions, process system faults, bounce out menus, modify alarm limits and alarm switch of various parameters, and processing of alarm disply and the system fucntion settings, setting of information of the patients, display of breath oxygenation diagram, display of abnormal analysis waveform, switching of the display interfaces, history data of the EVENT, and tendency data, and drive the task of sending control commands and the task of recorder.

⑤．Task of sending control command: send out various control commands, such as: version number reading command, lead switching of the multi-functional board, gain changing, filtering means changing command, start and stop measuring command of NIBP, and send alarm information and sound information to the panel.

⑥．Output task of the recorder: accomplish real-time waveform and parameter recording and parameter alarm recording.

⑦．Network sending task: send the waveform, parameter, maximum and minimum alarm value, and other related information of this bed to the central station.

⑧．Network reception task: send the modified maximum and minium alarm values and related settings (such as: analog demonstration, NIBP measuring switch, mode, channel, and lead selection, etc.) of the central station to the monitor.

⑨．Task of refreshing the waveform regularly: fresh the waveform in real time.

CHAPTER 3. Verification of monitoring parameter

3.1 System inspection

This section will introduce the system inspection of MMED6000DP series monitors, including: appearance and assembly inspection of the whole machine, start-up inspection, configuration， normal operation inspection, normal work inspection of the recorder, net working inspection, clock inspection, ECG output inspection, long-time operation inspection of the monitor, and safety detection.

3.1.1 Appearance and assembly inspection of the whole machine

(1) There is no besmirchment, obvious scoring, breakage, and crack on casing of the machine, and assebly is firm, without loose part or broken pieces, etc.

(2) Operaton of keys is fine, and the interfaces function are normal.

(3) Silk on surface of the instrument is complete and correct.

(4) Accessories are complete and perfect.

(5) Perform vibration test to the whole machine before other tests.

3.1.2 Start-up inspection

After powering on, the monitor works normally and there is no abnormality on the screen and no instruction of error message; check whether waveform scanning of all channels are normal and whether parameters refreshing and clock are normal.

3.1.3 Normal operation inspection

(1) Operate every key, the monitor should act or respond normally according to the Operatior’s Manual, and abnormal operation shall not cause crash.

(2) Revolve and press the knob, the monitor should act or respond normally according to the User Manual, and abnormal operation shall not cause crash.

(3) Operate the monitor according to Operator’s Manual, check whether the sound of key pressing and each level of alarms are normal, whether the volume control is normal and whether the alarm silence and alarm inhibit function are effective.

(4) Inspection of the recorder.

3.1.4 Record

The recorder shall record according to the conditions and content specified in the User Manual, including:

(1) Record shall be correct and accord with the waveform or other records displayed on the screen.

(2) Recording shall be stopped immediately by pressing the stop key during recording.

(3) Faults of hardware of the recorder can be indicated on the screen.

(4) It works normally for a long time and no paper jamming happens.

3.1.5 Net working function

(1) No matter which one is turned on first, the centration station or the monitor, net working shall work and number of the bed shall be correct.

(2) Data receiving and sending of the monitor and centration station are normal.

(3) Waveform parameter, alarm limit, related information about NIBP measuring, alarm switch, and ECG lead receiving by the central station shall be correct.

(4) The alarm limit, related information about NIBP measuring, alarm switch, upper and lower time synchronization, and ECG lead returned from the central station shall be correct.

(5) After the monitor is turned off, response of the centration station shall be correct.

(6) When any connection of the network is cut off, the centration station can indicate that this bed is off line, and network and operation will be normal after recovering the connection.

3.1.6 Clock inspection

Correct indiction, even running, without sudden change, without stop.

3.1.7 If operate the monitor for a long time, check whether there are any circumstances such as crash or scanning suspension of the wave.

3.1.8 Factory menu setting of the monitor

Except for the “factory setting” menu, set the values as initially uploaded by the software.

3.1.9 Safety inspection

(1) Grounding leakage current detection

Normal: a voltage with the effective value of 250V is applied between the short circuit of fire wire and zero wire and grounding wire of the power supply, with the current less than 0.5mA.

Single failure: a voltage with the effective value of 250 is applied between the fire wire and grounding wire of the power supply, with the current less than 10mA.


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(2) Leakage current detection: including three monitoring parameters, ECG, SpO2, and TEMP. Take ECG as an example.

Normally, connect all the leads of ECG and apply a voltage with the effective value of 250V between the leads and ground, with the current not less than 10µA.

3.2 Engineer menu Under the monitoring status, revolve the knob to locate the cursor at the icon of “system setting “ ”, and then press the knob, the menu bouncing out at bottom of the screen is as below: engineers with different rights enter with different codes, the codes are: “2222” and “7134”.

3.3.1 Enter the main menu and select [EXTEND] [SYSTEM], and then select the code 2222, refers to figure 3-3，click [PW-ENTER] to enter the system menu. There are four options, including “DEMO”, “ECG CAL”, “USERPW” and “SETUP”.

4 AUTO

Figure 3-1

0 VER608 RESET SYSTEM BED MESSAGE OTHER RETUN

Figure 3-2 Entering password: revolve the knob to select the item to be set, and then press the knob, characters of the selected item will become white and change the value in this item by revolving the knob. After setting the code, press [PW-ENTER] to complete the setting and enter the system menu, refers to figure 3-3 and 3-4.

0 0 0 0 1ST 2ND 3RD 4TH ENTER RETUN

Figure 3-3

OFF OFF DEMO ECGCAL SETUP USERPW RETURN

Figure 3-4

In the [SETUP] menu, the user can set “DEF", “LAN”, “HzCho”, “TEM-H” and “TEM-L”.

“DEF”：Default settings.

“LAN”: “EN” or “汉语”. Users can set the display language is English or Chinese.

“HzCho”：50Hz or 60Hz Users can set the display language is 50Hz or 60Hz.

“TEM-H” and “TEM-L”：When the switch of the fan is auto, if the temperature of the monitor is beyond the alarm limits, the fun will run and the alarm will be heard until the temperature is normal.

3.3 Parameter verification To ensure acuracy of the monitor, inspect and calibrate the parameters regularly, generally once in a year.

3.3.1 Inspection of ECG and RESP parameter

(1) Inspection Device Physiological signal simulator

(2) Inspection procedures

①. Connect the physiological signal simulator with the ECG interface of the monitor.

②. Check the number of ECG waveforms on the screen of monitor, and ECG module menu shall accord with the selections in the factory menu.

③. Check whether the ECG waveform and RESP waveform are normal.

④. Set parameters of the simulator: HR=30 (gains×4), RR=120

⑤. Check the waveforms of ECG and RESP and check whether the values of HR and RR are the same as the parameters set by the simulator.

⑥. Check whether the monitor will make report immediately when the ECG lead falls off.

3.3.2 Inspection of NIBP parameters

(1) Inspection Device

NIBP stimulator

(2) Inspection procedures Use the NIBP stimulator with calibration function to calibrate and judge the acuracy of blood pressure pump. After finishing the calibration, perform the inspection below:

A. Both the simulator and monitor are set to the adult mode. B． Select a group of blood pressure value within the measuring range on the NIBP stimulator, such as: S=90; M=70; D=60 C． Check whether the acutual results measured by the monitor are consistent with the value set by the stimulator. D． Change the blood pressure value set by the stimulator, and measure again. E． Check whether the acutual results measured by the monitor are consistent with the value set.

TIME VOLUME PRINT COLOR FAN EXTEND RETURN


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(3) Software calibration Under the monitoring status, revolve the knob to locate the cursor at the position of “NIBP” in the block of blood pressure parameters within the digital display area.

Figure 3-5

And then click the knob, the menu will bounce out at the bottom of the screen as below.

mmHg MANUAL 0 0 ALARM UNIT CYCLE MODE NON-S RETURN

Figure 3-6 SYS

Click “Alarm” to enter the alarm setting menu, and then select “SYS” to adjust the maximum and minimum of the systolic pressure alarm to the most.

OFF SYS MEAN DIAS ALARM RETURN

Figure 3-7

255 220

Figure 3-8

Return to [ALARM] menu, there are the “QUOTIETY” and “OFFSET” whose ranges are -10~10 and used to calibrate the systolic pressure, the principle is: SBP(after)= SBP (before)+ SBP(before)XQUOTIETY/100+ OFFSET.

mmHg 0 0 OFF ALARM UNIT SQUTY SOFFS NON-S RETURN

Figure 3-9 MEAN

Enter the NIBP menu and click “ALARM” to enter the alarm menu, and then select “MEAN” to adjust the maximum and minimum of the mean pressure alarms to the most as Figure 3-11.


Figure 3-10 220 200

Figure 3-11 Return to the [ALARM] menu, there are the “OFFSET” whose ranges are -50~50 and used to calibrate the CUFF. The principle is CUFF(after)=CUFF(before)+OFFSET.

OFF OFF 0 SYS MEAN DIAS ALARM IBRAT OFFSET RETURN

Figure 3-12 Return to the [NIBP] menu, there is the “QUOTIETY” and “OFFSET” whose ranges are -10~10 and used to calibrate CUFF, the principle is: MBP(after)= MBP(before)+ MBP(before)XQUOTIETY/100+OFFSET.

mmHg 0 0 OFF ALARM UNIT MQUTY MOFFS NON-S RETURN

Figure 3-13 DIAS

Enter the NIBP menu and click “ALARM” to enter the alarm menu, and then select “DIAS” to adjust the maximum and minimum of the diastolic pressure alarm to the most as figure 3-15：


Figure 3-14 220 180

Figure 3-15

Return to the previous menu again. And there are the “QUOTIETY” and “OFFSET” whose ranges are -10~10 and used to calibrate the diastolic pressure, the principle is: DBP(after)= DBP (before)+ DBP(before)XQUOTIETY/100+ OFFSET.

mmHg 0 0 OFF ALARM UNIT DQUTY DOFFS NON-S RETURN

Figure 3-16

HIGH LOW RETURN

HIGH LOW RETURN

HIGH LOW RETURN


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3.3.3 SpO2 parameter inspection (1) Inspection tool

SpO2 stimulator


A. Connect the SpO2 stimulator with the monitor SpO2. B. Set parameters of the SpO2 stimulator to be: SpO2=98 PR=70

Check whether the values of SpO2 and PR of the monitor are consistent with the stimulator. (Note: for the value of PR, heart rate source must be SPO2 in the blood oxygen menu.) D. Change the values of SpO2 and PR of the SpO2 stimulator. E. Check whether the values of monitor are consistent with the values set. F. Pull out the SpO2 probe, the monitor will make report.

(3) Software calibration

Under the monitoring status, revolve the knob to locate the cursor at the position of “SPO2” in the block of SPO2 parameter within the digital display area.

Figure 3-17

And then click the knob, the menu will bounce out at the bottom of the screen. Operations refer to Figure 3-18 to 3-19.

3 ECG OFF FILL AMPL HRFROM ALARM PR SOU WAVE RETURN

Figure 3-18

OFF 100 80 OFF PR AL PROBE HIGH LOW ALARM RETURN

Figure 3-19

Adjust SpO2 upper limit to the maximum 100, and the lower limit to the maximum 99. Then return to previous menu of SPO2, there is the “OFFSET” whose range is -5～5 and used to calibrate the value of SpO2. The principle is: SpO2(after calibration)= SpO2(before calibration)+ deviation of SpO2.

3 0 OFF FILL AMPL OFFSET ALARM PR SOU WAVE RETURN

Figure 3-20

3.3.4 TEMP parameter inspection

(1) Inspection Device

Physiological signal stimulator


A. Connect one end of the temperature sensor with the stimulator and the other with the TEMP port of monitor. B. Set the stimulator: TEMP=34℃. C. Check whether the value of TEMP displayed on the screen of monitor is 34℃. D. Change the value of stimulator: TEMP=40℃. E. Check whether the value of TEMP displayed on the screen of monitor is 40℃.

(3) Software calibration

Under the monitoring status, revolve the knob to locate the cursor at the position of “TEMP” in the block of TEMP parameter within the digit display area.

Figure 3-21

And then click the knob, the menu will bounce out at the bottom of the screen. Operate according to Figure 3-32 and 3-33.

Cel UNIT ALARM RETURN

Figure 3-22

45.0 44.5 MEDIUM 2.0 OFF HIGH LOW ALARM DI_LMT TEMPDI RETURN

Figure 3-23


14

Adjust the upper limit and lower limit of body temperature to the most, 45.0 and 44.5 respectively. Return to current menu and enter “T1 OFFS” and “T2 OFFS” whose ranges are -1.0～1.0 and used to calibrate the value of body temperature. The principle is:

T1 (after) = T1 (before)+ T1 Cal; T2 (after) = T2 (before) + T1 Cal.

39.5 36.0 MEDIUM 0.0 0.0 HIGH LOW ALARM T1 Cal T2 Cal RETURN

Figure 3-24


15

CHAPTER 4. Service

4.1 Disassembly diagrams

Figure 4-1

Figure 4-2

According to the different function boards used, the core can be installed with: blood oxygen board, invasive blood pressure board, and CPT template, one or two of the three. Installing position is as shown in the figure. If only one function board is used, it shall be installed at the position indicated on the left preferentially, and if two function boards are used, they shall be installed at the positions indicated on the left and right.

4.2 Fault clearance guidance Faults may be caused to the MMED6000DP-M7 monitor due to various factors (such as instable of grid voltage, vibration, impact, and aging, etc.) during transportation, storage, and use and the monitor fails to work normally. In such cases, professional personnel with certain experiences in electronic medical instrument maintenance shall perform component level overhaul with reference to the classification of faults below. The component level overhaul is to position the fault to components of the instrument, such as power panel, master control board, TFT components, measuring cable or the function boards, by analysis, replacement, and trial operation of the components. Maintenance of the components, namely maintenance of the elements and devices, shall be carried out by experienced engineer of the manufacturer with special instrument and equipment and under specific environment and conditions.

4.2.1 Fault of whole machine

Phenomenon Possible Reasons Solution

①The fuse is damaged ①Replace the fuse

②Power supply is damaged ②Replace the power supply

③Other components are shorted ③Find out the shorted component and replace it

There is no display when the machine is turned on, and the power indicator lamp does not brighten up and the fan does not run. ④Failure of the power panel ④Replace the power panel

Failure of the master control board ①

or display. ①Turn to the display fault confirmation and replace corresponding component.

There is no display when the machine is turned on or the screen is black while working, however the power indicator lamp brightens and the fan works normally

②Backlight inverter of the screen is damaged.

②Replace the inverter

Character display is normal while waveform is intermittent

Error in data communication between the master control board and function board.

According to the error indication, replace the master control board, patch panel or corresponding function board to confirm the fault.


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①The master control board or corresponding component is damaged.

①Replace the master control board An operation or measuring function fails

②The keyboard is damaged or fails. ②Replace the keyboard

①Instant strong interruption of the electricity grid.

①Check the power supply and grounding system

②Performance of the power panel is poor.

②Replace the power panel

③Performance of the master control board is poor. ③Replace the master control board

Accidental crash

④Connection of the power supply and master control board is poor.

④Replace or repair the connector

4.2.2 Display fault

Phenomenon Possible reasons Solution ①Backlight inverter is damaged

①Connect external VGA display to confirm the fault

②Connecting wire of the LCD is poor

②Repair or replace the wire of LCD Power supply of start-up is normal, but there is no display or the screen becomes black during normal work

③Master control board is damaged ③Replace the master control board

4.2.3 Operation, record, and net working faults

Phenomenon Possible reasons Solution ①Keyboard or rotary encoder is damaged ①Replace the keyboard or rotary encoder

Keys or the rotary encoder fails ②Wiring of the keyboard fails ②Replace or repair the wire of keyboard

①The keyboard fails ①Replace the keyboard

②The horn or wiring fails ②Replace the horn or wiring The sound is hoarse or fails

③Audio amplifier of the power panel fails ③Replace the power panel

There is no paper in the recorder or the ①

paper bail has not been pressed ①Load paper for the recorder and press the paper bail

②The recorder fails ②Replace the recorder

③Drive power supply of the recorder fails ③Replace the power panel

Wiring of the recorder fails ④ ④Replace or repair wiring of the reorder

The recorder does not print

⑤Installing direction of the printing paper is incorrect

⑤Reinstall the printing paper

Paper feeding of the recorder is deflective

Installation and positioning of the recorder is poor Adjust installation of the recorder

①Network wiring fails ①Check and repair the network wire Net working fails

②The master control board fails ②Replace the master control board

4.2.4 Power panel fault

Phenomenon Possible reasons Solution

The fuse is burnt when turning on the machine. The power supply or other parts are shorted Turn on the machine for further inspection

When all the loads are disconnected, the fuse is till burnt

Power supply fails Replace the power supply

The fuse is burnt when connecting a component This component is shorted Replace this component

Power indicator lamp and indicator lamp of the master control board brighten up, but the fan does not run and indicator lamp of the patch panel does not brighten up

+12V DC power supply is damaged

Replace the power panel

Indicator lamp of the master control board does not brighten up, but the fan runs normally and indicator lamp of the patch panel brightens

+5V DC power supply is damaged

Replace the power panel

4.2.5 Monitoring parameter fault

Phenomenon Possible cause Remedy Contact of the electrode pad of ①

cardiac electricity is poor ①Use a new electrode pad and ensure good contact

②RL electrode is hanging in the air ②Connect RL electrode There is no cardiac electricity wave

③CSN608 board is damaged ③Replace CSN608 board

Connecting means of the electrode ① ①Connect the measuring electrode pad correctly


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is incorrect

②There is electrode pad hanging in the air

②Remove the unused electrode pad

③The AC power supply has no ground wire

③Use three-wire power supply and ground it, or connect the grounding terminal to the ground

④Filtering means of ECG is incorrect ④Use a suitable filtering means

Cardiac electricity wave is abnormal or interrupted

⑤The 608 function board is poor ⑤Replace the CSN608 board

①The electrode is in poor connection ①Reinstall the electrode to correct the connecting position

②The patient moves frequently ②Make the patient quiet There is no breathing or the breath wave is abnormal

③The CSN608 board is poor ③Replace the CSN608 board

The measuring probe is in poor ①

connection ①Connect and fix the body temperature probe Measured value of body temperature is

incorrect ②The CSN608 board is poor ②Replace the CSN608 board

Heart rate is inaccurate and abnormal and analysis of ST section is incorrect

Measuring wave of cardiac electricity is poor

Adjust the connection to make the measuring wave normal

NIBP can not be charged The air pipe is folded or leaks Adjust or repair the air pipe

Blood pressure can not be measured once in a while

The cuff is loose or the patient moves Make the patient stay still and tighten the cuff

①Size of the cuff is not fit for the patient

① Use a suitable cuff Error of blood pressure measurement is big

②The CSN608 board fails ②Replace the CSN608 board

There is no blood oxygen wave ①The probe or blood oxygen module is damaged ①Replace the probe and check the fault

①The patient is moving ①Make the patient quiet The blood oxygen wave is interrupted greatly ②Ambient light is too strong ②Weaken ambient light

Measured value of SpO2 is incorrect The patient is injected with stain Clear the stain before measuring


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CHAPTER 5. Monitor Installation

5.1 Core connection of the monitor

Figure 5-1

NO. From TO Type NO. From TO Type

① P9 of power supply board P11of CSN608 CS6.644.1236A ⒁ P201 of CSN608 Rear shell T1、T2 CS6.644.1149B

② P11 of power supply board Lanyu mainboard CS6.644.1374 ⒂ P200 of CSN608 Rear shell ECG CS6.644.1151C

③ P7 of keyboard J10 of converter CS6.644.1373 ⒃ J1 of CSN608 Pump cable CS6.644.1249

④ P8 of power supply board J6 of printer CS6.644.1369 ⒄ P2 of keyboard Alarm lamp board CS6.644.1115

⑤ P1 of power supply board P6 of keyboard CS6.644.1237 ⒅ P5 of keyboard P12 of power supply board CS6.644.1245

⑥ P4 of keyboard J6 of Lanyu mainboard CS6.644.1371 ⒆ CON2 of Lanyu mainboard Networks board CS6.644.1375

⑦ P3 of power supply board P3 of keyboard CS6.644.1246 ⒇ J1 of keyboard Line of LCD provide for oneself

⑧ P4 of power supply board Battery CS6.644.1372 （21） J2 of keyboard J3 of Lanyu mainboard CS6.644.1363

⑨ P2 of power supply board power adapter CS6.644.1240 （22） CON2 of Lanyu mainboard CF card reader provide for oneself

⑩ AC-DC Module 220V power socket CS6.644.1260A （23） P7 of power supply board Fan CS6.644.021F

⑾ J7 of Lanyu mainboard J4 of printer CS6.644.1368 （24） P5 of power supply board Laud Speaker CS6.644.021F

⑿ J2，J6 ofCSN608 Valve cable CS6.644.1248 （25） J4 of Lanyu mainboard P10 of CSN608 CS6.644.1370

⒀ P105 of CSN608 SpO2 on Rear shell CS6.644.1365A （26） P6 of power supply board J5 of Lanyu mainboard CS6.644.1244


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5.2 Casing inspection of the monitor Check the name, quantity and specification of each item according to the packing list inside the packing case. If there is any discrepancy, contact the service department of our company.

5.3 Electrifying inspection of the monitor Perform necessary inspection before electrifying the monitor:

(1). Check whether voltage of the electricity grid accords with the operating voltage of the monitor. (2). The monitor must use three-term power line and three-term socket. (3). When the monitor is used with other medical equipments at the same time, connect the equal electric potential terminals of the monitor with those of other equipments effectively and reliably. (4). Prevent liquid from entering the monitor Check whether display on the screen is correct after electrifying the monitor.

5.4 Installation of printer 1. Insert the power cable and serial port cable to the corresponding sockets on the printer. Refer to figure 5-2.

2. Put the printer in the monitor correctly and fix it with two M3×12 screws, as shown in figure 5-3：

Fig. 5-2 Fig. 5-3

Fig. 5-4 Printer cable Connection


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CHAPTER 6. Basic Operation

6.1 Key pressing Look the monitor from the front side, there are several keys on the keyboard of the monitor:

(1). FREEZE (freeze/unfreeze key)

Under normal monitoring, press this key to stop all wave refreshing on the screen; under freezing status, press this key to recover refreshing of all waves.

(2). SILENCE (alarm suspension/reset key, mute)

Press this key for a short moment: alarm suspended for 3 minutes, and counting down of 3 minutes' alarm will be displayed on upper right corner of the screen.

(3). PRINT (record/stop)

Press this key to start a real-time recording; during recording, press this key to stop this recording.

Length of recording can be chosen through “printing length” in the menu of “printing setting”.

(4) NIBP (start measuring/stop measuring):

Under non-measuring status: press this key to charge the cuff and start a manual blood pressure measuring.

Under measuring status: if this measurement is to be cancelled due to some reason, press this key to stop the measurement and discharge.

Note: press this key during continuous measuring, not only this blood pressure measurement is given up, but the continuous blood pressure measurement is cancelled;

(5) MENU

Refresh the screen manually, press this key in any menu to exit the menu and return to the display interface of main screen.

6.2 Screen display area The screen is divided into three parts, indication area, waveform area, and parameter area.

(1). Indication area

This area is on tht top of the screen and for display bed No., name of patient, system time/date, regular alarm and indication information.

(2). Waveform area

The waveform area can display 7 waves at most. When the seven leads of ECG are displayed on the same screen, upper left corner of each wave is identified with name.

(3). Parameter area

The parameter area is on the right of the screen and noted with names of the parameters. Use the rotary button to select these parameters to enter corresponding menu and work on the items of the menu to achieve the purpose of the operator. Alarm information of corresponding parameter will be displayed in corresponding parameter area or waveform area, NIBP will display such information as monitoring mode, unit, measuring mode, and measuring time, and TEMP will display unit.


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CHAPTER 7. Cleaning and Maintenance

7.1 Cleaning

Cleaning of MMED6000DP-M7 monitor shall be carried out according to the stipulated method. Recommended material and agent shall be used to prevent the monitor from being polluted and damaged or even bringing bacteria that may endanger people’s health. In the meantime, the user shall not use deteriorated or damaged lead, sensor and accessories to protect the patient and medical personnel.

7.1.1 Cleaning

Cleaning of MMED6000DP-M7 monitor shall:

(1). Use such cleaning instruments as soft cotton

(2). For the mainframe and power supply box, soap, amido or ethanol based cleaning material can be used.

(3). For reusable cardiac electricity lead, blood pressure sensor, blood oxygen probe, and body temperature probe, soap or amido based cleaning materials can be used.

Requirements for detergent:

Ammonia: diluted ammonia<3%

Ethanol: Ethanol 70%, isopropyl alcohol 70%

Note: do not use cleaning stuff made of friction materials, such as wire brush or lapping agent, etc. Liquid shall not enter the instrument or soak the instrument.

7.1.2 Sterilizing

Sterilize the monitor when necessary, and pay attention that:

(1). For the mainframe and power supply box, ethanol and acetaldehyde based detergent shall be used;

(2). Acetaldehyde based detergent shall be used for the cardiac electricity lead;

(3). Ethanol and acetaldehyde based detergent shall be used for reusable cuff, blood oxygen probe, and body temperature probe.

Requirements for bactericide:

Ethanol: ethanol 70%

Acetaldehyde: formaldehyde (35%-37%)

Bleacher: diluent of sodium hypochlorite (bleacher for washing), with the concentration of 500ppm-5000ppm.

Note: Prevent the sterilizing detergent from entering or soaking the instrument and accessories.

Prevent the sterilizing liquid from staying on surface of the instrument.

7.1.3 Disinfecting

Disinfect the instrument when necessary based on regular cleaning. Disinfection must be performed strictly according to the standards of the

hospital and pay special attention to safety. Generally, EtO gas can be used for disinfection.

7.2 Maintenance

In order to give play to the best performance of MMED6000DP-M7 monitor, ensure accuracy of long-term work of the instrument, and prevent various measuring errors, the monitor shall be maintained properly. In the meantime, the monitor shall be cleaned, sterilized and disinfected regularly to prevent cross infection.

Maintenance of the monitor includes:

① Check the monitor, leads, sensor, and accessories regularly;

② Clean the monitor as required;

③ Perform safety test once in year;

④ Calibrate NIBP and body temperature parameter one in a year;

⑤ Perform function test to the whole machine once in a year;

⑥ Perform safety test after the machine is opened for repairing;

CHAPTER 8. Net working

8.1 Networking performance

(1). Longest distance (through a hub) between the monitor and central station can be up to 100M;

(2). Longest time between start-up to successful connection is 40 seconds;

(3). Deferring of online data <5 seconds;

(4).The monitor has the Plug&Play function, namely the network joint connected with the MMED6000DP-M7 portable monitor can be plugged and pulled out dynamically and it is unnecessary to turn off the power supply.

8.2 Use (1). Technicians of the company shall be responsible for layout analysis, wiring, and installation of the network system;

(2). Turn on the machine for trial connection after connection of the net line is proved to be proper;

(3). If there is any fault during the use, refer to Section 4.2 for fault handling.

Appendix 1 Keys brief Description

1.1 REFRESH (return to the main screen)

Press this key to refresh the main screen or return to the main screen. Press this key under any menu, the system will stop current operation automatically and return to the main interface. Press hits key in the main interface, and system will refresh the whole screen automatically.

1.2 FREEZE (freeze/off-frozen key)

Under normal monitoring, press this to stop all wave refreshing on the screen; under freezing status, press this key to recover refreshing of all waves.

1.3 SILENCE (alarm suspension/reset key, mute)

Press this key for a short moment: alarm suspended for 3 minutes, and countdown of 3 minutes' alarm will be displayed on upper right corner of the screen.

Alarm suspension can clear the alarm mark, namely: when alarm suspension is over, the cleared alarm will no longer generate alarm ①

indication. Only when new alarm condition happens, there will be sound-light alarm indication.

When alarm is suspended, the② system will not perform any physiological alarm identification, namely not generating any physiological alarm indication.

When alarm is suspended, the old technical alarm will still be displayed on the screen. However, the newly generated technical ala③ rm will stop the suspension of the system automatically and recover sound-light alarm. Volume of the alarm accords with the setting of menu.

When alarm is suspended, press this key again for a short while to stop the alarm suspension and recover normal a④ larm status.

1.4 PRINT (record/stop key)

Press this key to start a real-time recording; during recording, press this key to stop this recording.

1.5 NIBP (start measuring/stop measuring)

Under non-measuring status: press this key to charge the cuff and start a manual blood pressure measuring.

Under measuring status: if this measurement is to be cancelled due to some reason, press this key to stop the measurement and discharge.

Note: press this key during continuous measuring, not only this blood pressure measurement is given up, but the continuous blood pressure measurement is cancelled;


23

Appendix 2 Alarm instructions Alarm instructions mainly include: technical alarm information during normal use, physiological alarm instruction, function safety alarm, and machine status information.

When power of the battery is low, icon of the battery power becomes red for warning. When the temperature is too high, the temperature becomes red for warning, and when parameters are higher than the upper limit or lower than the lower limit, the parameters will become different colors (red, blue, white) which are divided into three levels. Alarms by strings are as shown in the table below:

Type Chinese string English string Remark

Error ERROR Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Lead off LDOFF Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Signal low SINGAL LOW Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Ventricular

fibrillation

VFIB Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Atrial fibrillation AFIB Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Pulse arrest ASYST Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Tachycardia TACHY Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Room speed VENT TACHY Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Bradycardia BRADY Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Beat lost MISS BEAT Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Frequency PVC FREQ PVC Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Running PVC RUN PVC Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Trigeminy TRIG Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Biogeminy BIG Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

RonT RonT Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Insert PVC INTER PVC Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

Paired PVC COUPL Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

ECG

PVC PVC Displayed in the ECG alarm area, ECG parameter display area or ECG waveform area

NIBP Overpressure OVERPRESSUR

E

Displayed at the left of top of the screen

Printer busy PRINTER BUSY Displayed in the RESP alarm area，RESP parameter display area or RESP waveform area

Printing stop PRINTER STOP Displayed in the RESP alarm area，RESP parameter display area or RESP waveform area

RESP

Printer error PRINTER ERROR Displayed in the RESP alarm area，RESP parameter display area or RESP waveform area

Alarm off ALARM OFF Displayed in the SpO2 alarm area，SpO2 parameter display area or SpO2 waveform area SPO2

Help call HELP CALL Displayed in the SpO2 alarm area，SpO2 parameter display area or SpO2 waveform area

Printing PRINTING Displayed at the right of top of the sreen RECORD

Printing finished PNT STOP Displayed at the right of top of the sreen

manual service mmed6000dp-m7

Documents

sound alarm system

central monitoring system

repair of choice equipment

monitoring equipment

unpublished work

correct operation

operation condition

practical operation